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Description

Ashlar-Vellum Cobalt VC6 File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of VC6 files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25704.

PUBLISHED Reserved 2025-07-21 | Published 2025-09-17 | Updated 2025-09-18 | Assigner zdi




HIGH: 7.8CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Problem types

CWE-190: Integer Overflow or Wraparound

Product status

Default status
unknown

1204.96
affected

References

www.zerodayinitiative.com/advisories/ZDI-25-637/ (ZDI-25-637)

cve.org (CVE-2025-7985)

nvd.nist.gov (CVE-2025-7985)

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